समीकरण \(x^2+6x+k=0\) के वास्तविक मूल होने के लिए (k) के बारे में कौन सी शर्त सही है?
For \(x^2+6x+k=0\) to have real roots, which condition on (k) is correct?
Explanation opens after your attempt
A. \(k\le9\)
Concept
For real roots \(D\ge0\) is required. From \(36-4k\ge0\), we get \(k\le9\).
Why this answer is correct
The correct answer is A. \(k\le9\). For real roots \(D\ge0\) is required. From \(36-4k\ge0\), we get \(k\le9\).
Exam Tip
वास्तविक मूलों के लिए \(D\ge0\) चाहिए। \(36-4k\ge0\) से \(k\le9\) मिलता है।
Login to save your score, XP, coins and progress.
